試題詳解

3. A 8000-N trunk is pushed along a level road by two men who apply a total forward force of 1000 N. Neglecting friction, what is the acceleration of the trunk? (Gravitational acceleration g = 10 m/s²)
(A) 0.0125 m/s²
(B) 0.125 m/s²
(C) 0.8 m/s²
(D) 1.25 m/s2
(E) 8 m/s²